- 
T. A. Conrad on American Fossiliferous Strata. 361 
may be traced within two miles of each other, Impressions of 
the leaves of this Cyclopteris are extremely numerous, whilst 
stems are also abundant, generally in a vertical position, 
or so inclined and disturbed as to suggest an agitation from 
wind or eddies placing them in a position in which the sedi- 
ment preserved them: 
Description of a new Cycadaceous plant from the Raritan Clay. 
PODOZAMITES. 
Podozamites proximans Conrad. Lanceolate, gradu- 
base 
. 
These plants go far to prove the Raritan clay to be 
of Triassic age, but I have further evidence in the 
Shells to convince me that it is the equivalent of the 
Muschelkalk of Upper Silesia. Dunker in “ Paleon- 
ica,” describes and figures some bivalves of the 
elkalk of Silesia, which if not identical with the 
shells of the Raritan, clay, must be nearly allied spe- 
S1C. 
ter 
